Here is the formula question

Question	Answer
This is the total	I am some total
=
This is the thing to start with	I am the start of the formula You can enter up to 200 words
This is an extra question
+
This is the thing to add	I am the part of the formula added You can enter up to 300 words
-
This is the thing to subtract	I am the part of the formula to subtract You can enter up to 400 words